Question

Find the y-intercept of each line defined below and compare their values.​

Answer 1

Y - intercept of equation of-line A is y = 1.

Y - intercept of equation of-line B is y = -2.

Explanation:

Given:

For Iine A:

`y+ 1 =(1)/(5)* (x+10)`

For line B:

x = -2 then y = 2

x = -1 then y = 0

x = 0 then y = -2

x = 1 then y = -4

To Find:

Y- intercepts of Line A and Line B.

Solution:

Intercepts: Where the line cut X axis called X- intercept and where cut Y axis is called Y- intercept.

Y-intercept mean x coordinate will be 0

Therefore Put x = 0 in Line A we get

`y+ 1 =(1)/(5)* (0+10)\\y+1=(10)/(5)\\ y+1=2\\y= 2-1\\y=1`

Y - intercept of equation of-line A is y = 1.

For line B

See where x coordinate is 0 ,Therefore we have,

y = -2

Y - intercept of equation of-line B is y = -2.