Question 243549
The general linear equation is:  y = mx + b.
m = slope = change in 'y' divided by change in 'x' = the rise over the run
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m =4, which is given
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The y-intercept is the point (0,3). So when x=0, y=3.
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y = 4x + 3
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You can graph this to see how steep a slope of 4 looks.
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{{{
graph (500,500,-10,10,-10,10,4*x+3)
}}}
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Note 
a) Positive slope always goes up from lower left to upper right.
b) Negative slope always goes down from upper left to lower right.
c) A horizontal line has slope = 0.
d) A vertical line has an undefined slope because you cannot divide by 0.
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Done.