Question

13x + 3y = 15 and y = 5 - 4x.

A. x = 0, y = 5
B. x = 5, y = 0
C. x = 9, y = -31

Pleaseee explain with words and number pleasee thank you so much

Answer 1

A. X=0 Y=5

Those 2 equations are a system. You answer is the value of x and y.

13x+3y=15

y=5-4x

First, lets make each equation fit into y=mx+b

13x +3y=15 y=5-4x

-13x -13x y=-4x+5

3y= -13x +15

Let's use the elimination method to solve this.

y= -4x+ 5 multiply top by 3

3y=-13x+15

3y=-12x+15

3y=-13x+15 subtract the equations

0=x

Lets use the x we just found to solve for y.

y=4x+5

y=4(0)+5

y=5