Answer:
Question 22
x intercept is 7
y intercept is 4
The answer is C
Question 24
x intercept is -4
y intercept is 7
The answer is B
Step-by-step explanation:
x and y intercepts are the points at which the graph meets x and y axes.
x and y intercepts can be found the following way,
y intercept - substitute 0 to x
x intercept - substitute 0 to y
Question 22
[tex]7y=28-4x[/tex]
Substitute x=0 to find the y intercept
[tex]7y=28-4*0[/tex]
=[tex]7y=28[/tex]
=[tex]y=4[/tex]
Substitute y=0 to find x intercept
[tex]7*0=28-4x[/tex]
=[tex]0=28-4x[/tex]
=[tex]4x=28[/tex]
=[tex]x=7[/tex]
Therefore,
x intercept is 7
y intercept is 4
The answer is C
Question 24
[tex]4y=7x+28[/tex]
Substitute x=0 to find the y intercept
[tex]4y=7*0+28[/tex]
=[tex]4y=28[/tex]
=[tex]y=7[/tex]
Substitute y=0 to find x intercept
[tex]4*0=7x+28[/tex]
=[tex]0=7x+28[/tex]
=[tex]-7x=28[/tex]
=[tex]x=-4[/tex]
Therefore,
x intercept is -4
y intercept is 7
The answer is B
