Substitute y = 0 in the equation: 0 = 3x + 7 so that x = -7/3
y intercept 7 x intercept 7/3
y = 3/2 x + 7
-7
-7
10
If you mean: y = -3x+7 then the slope is -3 and the y intercept is 7
-7/5 or -1.4
7
4x plus 7 plus 3x equals 19 plus xx = 2
-4
10
The intercept is [ y = 7 ] .