Answer:
1. d. x-intercept is -4; y-intercept is 8.
2.d. x-intercept is 16; y-intercept is 20
3. b. -x+6y=24
4. a. 4.75k+2.25p=22
Step-by-step explanation:
1. -10x+5y=40
to find the y intercept let x =0
5y = 40
divide by 5
y = 40/5 = 8
to find the x intercept let y =0
-10x = 40
divide by -10
x = 40/-10
x=-4
2. 5x+4y=80
to find the y intercept let x =0
4y = 80
divide by 4
y = 80/4 = 20
to find the x intercept let y =0
5x = 80
divide by 5
x = 80/5
x=16
3. Write y=1/6x+4 in standard form using integers.
Ax+by =c
multiply each side by 6
6y = 6* (1/6 x + 4)
6y = x+24
subtract x from each side
-x+6y = x-x+24
-x +6y = 24
4. lbs of kumquats * price/per + lbs of pears * price/lb =22
k * 4.75 + p * 2.25 =22
4.75k + 2.75p = 22
