Question 15
How do I find the parabola of y=3x<sup>2</sup>+4x-5
`
First you find some points:
`<font face = "courier new">
`x| `y `| (x,y)
-3|`10 `|(-3,10)
-2|`-1 `|(-2,-1)
-1|`-6 `|(-1,-6)
`0|`-5 `|(0,-5) 
`1| `2 `| (1,2)
`2|`15 `|(2,15)

Then you plot them and draw a smooth curve

{{{graph(200,200,-5,3,-16,16,3x^2+4*x-5)}}}

Edwin