2=120
7= 11y +21
9= 28x+88
1
He is 2km short of halfway:
⇒ 17 + 2 = 19 km
He is halfway:
19 x 2 = 38 km
Total distance for the hike = 38km
Basically, simplifying variables is the same as regular equations (like 5-3=2 and 5x-3x=2x)
So 7x-x is the same as 7x-1x which equals 6x
And -3p+6p is the same thing as -3+6 but with a p. With this in mind, the answer is 3p
Hope this helps
The linear equation that represents the line that passes through the points (4,5) and (0,-3) is given by:
B. y = 2x - 3
<h3>What is a linear function?</h3>
A linear function is modeled by:
y = mx + b
In which:
- m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.
The line passes through (0,-3), that is, when x = 0, y = -3, hence the y-intercept is of b = -3.
The slope is given by the <u>change in y divided by the change in x</u>, hence:
m = (5 - (-3))/(4 - 0) = 2
Hence the equation is:
y = 2x - 3.
Which means that option B is correct.
More can be learned about linear equations at brainly.com/question/24808124
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