Question

Doing a Pre-Algebra Unit Test on Khan Academy

Answer 1

Answer:

-8,8

Step-by-step explanation:

since y=8 that add 8 to both sides to get rid of the -y.  you would then get -4x=32.  divide 32 by -4 and you would get -8 so the missing value would be -8

Answer 2

Answer:

x=-8

Step-by-step explanation:

First, lets change the standerd form to slop intercept

$-y=24+4x$

$y=-24-4x$

Now, let's subsite for y, and solve for x

$8=-24-4x$

$32=-4x$

$-8=x$

CHECK:

32-8=24

$24=24$