Question

Please help me out with these no one is helping me.
Please anyone
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Answer 1

graph attached

when y=3, x=1, x=-4

when x=-3.5, y=-23.75

just input the value of x in the equation:-3.5^2+3(-3.5)-1=-23.75

minimum value is the vertex:(-3/2,-13/2)

Answer 2

Below.

Explanation:

You find the values of y by substituting the values of x in the expression x^2 + 3x - 1.

So f(-4) = (-4)^2 + 3(-4) - 1 = 16-12-1 = 3

in the same way f(-3) = -1, f(-2) = -3, f(-1) = -3,

f(0) = -1 and f(1) = 3.

Now plot the points (-4, 3) , (-3, -1) and so on

Then you can read the values off this graph.