Answers
-x + 5y = 4 ⇔ slope 1/5, y-intercept 4/5
5y - x = 15 ⇔ slope: 1/5, y-intercept: 3
2y - 3x = 7 ⇔ slope: 3/2, y-intercept: 7/2
2y = 5x + 7 ⇔ slope: 5/2, y-intercept: 7/2
Explanation
-x + 5y = 4
5y = x + 4
y = (1/5)x + 4/5 slope 1/5, y-intercept 4/5
5y - x = 15
5y = x + 15
y = (1/5)x + 3 slope: 1/5, y-intercept: 3
2y - 3x = 7
2y = 3x + 7
y = (3/2)x + 7/2 slope: 3/2, y-intercept: 7/2
2y = 5x + 7
y = (5/2)x + 7/2 slope: 5/2, y-intercept: 7/2