Question

yki10.87-2110-9--2-6-10Which system of equations is best represented by this graph?А3x – y = 240 +9y = 36B3. - y = 64x + 9y = 42- 3y = -18

Answer 1

System 2x2

Find slopes of k1 and k2

k1 slope = (10--2)/(4-0) = 12/4 = 3

k2 slope= (-9 -9)/ (8-0) = 8/-18 = -4/9

Now find k1, and k2 interceptions with y

k1 , interception= -2

k2 ,interception = 4

Then now, form the 2 equations

y = 3x - 2

and

y = (-4/9)x + 4

Now rewrite equations

3x - y = 2

and

9y + 4x = 36

Then now looking at options ,we find that

ANSWER IS

OPTION A)

3x - y = 2