Write the equation of the line with slope=2 y/intercept=-7

Slope 2, y int - 7

In y = mx + b form, the slope is in the m position and the y int is in the b position. So it is just a matter of subbing

y = mx + b

y = 2x + (-7) ... not quite done ... distribute thru the parenthesis

y = 2x - 7