HELP, HELP, HELP! WILL GIVE BRAIN ! I need someone to answer these 3 simple questions!!!

1. the x coordinate corresponds with the x-axis (horizontally) and the y coordinate corresponds with the y-axis (vertical). The x-value tells how the point moves either to the right or left along the x-axis. This axis is the main horizontal line of the rectangular axis or Cartesian plane.  The y-value tells how the point moves either up or down along the y-axis. This axis is the main vertical line of the rectangular axis or Cartesian plane.

2. To name a point on a graph, count how many units from the origin (0,0) to the left or right you go for the x-value, then count how many units up or down you go to get the y-value.

3. a trend,  that may be an equation, like a parabole, a hyperbole, a simple line with or without inflexion point, or maybe an equation of best fit

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)