A spherical water tank with a radius of 21 ft is being filled at a rate of 150 ft3 per hour. How much time must elapse for the w
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The slope-intercept form:
m - slope
b - y-intercept
<em>subtract x from both sides</em>
<em>change the signs</em>
It's a linear function.
We need only two points to plotting a graph.
We choose any three values of x and calculate y.
