David buys 8 pencils for £1.20. how much would 9 pencils cost?

Which table represents a linear function? i'll give brainliest to first answer ^'^

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points