3 years ago

Evaluate 3x^2 +2x-5 when x=4

1 answer:

3 0

Replace each "x" in the original equation with (4):

3(4)^2 + 2(4) - 5
= 3(16) + 8 - 5 = 48 + 8 - 5. Can you finish this?

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Graph the line with a slope of 2/3 that contains the point (−3,−5)

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Answer:

Step-by-step explanation:

So for the given information, it would be easiest to use slope-intercept form, which is y=mx + b, where m is the slope and b is the y-intercept.

We can plug in 2/3 for the slope, because we are given that.

y=2/3x + b.

To find the y-intercept, plug in the given point for x and y and solve for b.

-5 = 2/3 · (-3) + b

-5 = -2 + b

b = -3

So now we have the complete equation of the line.

Now to graphing.

We can put the y-intercept, (0, -3), and the given point, (-3, -5) on a graph.

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