Algebra 1 Common Core Student Edition, Grade 8-9

How can you show t h a t t h is is a s o lu tio n to the original system? S ubstitute ( - 1 , 2 ) in th e original system. How c ...

Could you haveTh*nk I..™ solved this problem another way? Yes. For exam ple, you could have m ultiplied the second equation by 2 ...

Ip (^1) Pr act i ce an d Pr o b l em - So l v i n g Ex er ci ses MATHEMATICALPRACTICES Q Practice Solve each system using elimin ...

Reasoning A toy store w orker packed two boxes of identical dolls a n d p lu sh toys for shipping in boxes th at w eigh 1 oz w ...

Reasoning Use th e d artb o a rd at th e right. Can you score exactly 100 points w ith seven darts th a t all land on the board ...

Concept Byte Use W ith Lesson 6-3 i Matrices and So l v i n g Sy st e m s A matrix is a rectangular a rran g em en t of n u m b ...

Ex a m p l e Solve the system using an augmented matrix. 3x + 2y = 11 \x + y = 18 3 2 11 4 (^11) f-HCO 3 + ( 2)(4) 2 + ( —2)(1) ...

Applications of Linear Systems Co m m o n Co r e St at e St a n d a r d s A-REI.C.6 Solve systems of linear equations exactly an ...

What equations should you w rite? The break-even point is when income equals expenses, so write one equation for income and one ...

v d Got It? 2. The zoo has two o th er w ater tanks th at are leaking. O ne tan k contains 10 gal of w ater a n d is leaking at ...

® Got It? 3. a. You row u p stream at a sp eed of 2 m i /h. You travel the sam e distance dow nstream at a speed of 5 m i /h. W ...

Airports A traveler is walking on a m oving walkway in an airport. The ^ See Problem 3. traveler m u st w alk back on th e walk ...

Boating A b o at is traveling in a river w ith a c u rren t th a t has a speed of 1.5 k m / h. In one hour, th e b o at can tra ...

Mid-Chapter Quiz w MathXL®for School^ Go to PowerAlgebra.com Do yo u k n o w H OW? Solve each system by graphing. Tell whether t ...

Linear Inequalities Common Core State Standards A-REI.D.12 Gr ap h t h e so l u t i o n s t o a l i n ear i n eq u al i t y i n ...

Why d o es y = x - 2 represent the boundary line? Fo r a n y v a l u e o f x, the correspondi ng val ue of y is the boundary bet ...

Go t It? 3. What is the graph of each inequality? a. x< -5 b. y<2 Think Whi ch i n eq u al i t y symb o l shoul d you use? ...

Can y o u e l i m i n a t e choices? Ye s. Th e b o u n d a r y l i n e is solid and the region below it is shaded, so you know ...

Graph each inequality in the coordinate plane. x<4 23. y>-l 24. x>-2 -2jc + y > 3 27. x + 3y < 15 28. 4x - y > ...

Groceries At your grocery store, milk normally costs $3.60 per gallon. Ground beef costs $3 per pound. Today there are specials ...