Question

Can someone help me on 11 and 14

Answer 1

For 11, set them equal to each other, since they both equal y.

y=2x+5; y=3x-1
2x+5=3x-1
x=6

and then substitute that x-value to find y.

y=3(6)-1
y=18-1
y=17

for 14 you can substitute the bottom y-value (x+7) into the top equation.

2x=y-10; x+7=y
2x=(x+7)-10
x=-3

and then substitute that x-value to find y.

-3+7=y
y=4