Find the equation of the line whose(i) slope 3 and y - intercept = 5(i

1.	Find the equation of the line whose(i) slope 3 and y - intercept = 5(ii) slope = -1 and y - intercept = 4(iii) slope = -2/5 and y - intercept = -3
Answer» (i) Formula to be used: y = mx + c where m is the slope of the line and c is the y - intercept. Here, m = 3 and c = 5. Hence, y = (3)x + (5) i.e. y = 3x + 5 (ii) Formula to be used: y = mx + c where m is the slope of the line and c is the y - intercept. Here, m = - 1 and c = 4. Hence, y = (- 1)x + (4) i.e. x + y = 4 (iii) Formula to be used: y = mx + c where m is the slope of the line and c is the y - intercept. Here, m = -2/5 and c = -3. Hence, y = (-2/5)x + (-3) Or, 5y = - 2x - 3 i.e. 2x + 5y + 3 = 0

Find the equation of the line whose(i) slope 3 and y - intercept = 5(ii) slope = -1 and y - intercept = 4(iii) slope = -2/5 and y - intercept = -3

Answer»

(i) Formula to be used: y = mx + c where m is the slope of the line and c is the y - intercept.

Here, m = 3 and c = 5.

Hence, y = (3)x + (5)

i.e. y = 3x + 5

(ii) Formula to be used: y = mx + c where m is the slope of the line and c is the y - intercept.

Here, m = - 1 and c = 4.

Hence, y = (- 1)x + (4)

i.e. x + y = 4

(iii) Formula to be used: y = mx + c where m is the slope of the line and c is the y - intercept.

Here, m = -2/5 and c = -3.

Hence, y = (-2/5)x + (-3)

Or, 5y = - 2x - 3

i.e. 2x + 5y + 3 = 0