I don't think this question is complete but here's ur answer
Answer:
13
Step-by-step explanation:
a = 5
b = -8
5 - -8 = 13
Answer:
Nope
Step-by-step explanation:
Standard form for a linear equation in two variables is
with the terms containing x and y on the left side of the equation and a number on the right side.

Subtract 3 from both sides.

Add 5y.

Answer:
First, third, and fourth one would be the answers.
Answer:
See attached image
Step-by-step explanation:
This equation for a parabola is given in vertex form, so it is very simple to extract the coordinates of its vertex, by using the opposite of the number that accompanies the variable "x" in the squared expression (opposite of 2) for the vertex's x-value, and the value of the constant (-6) for the vertex's y-value.
The vertex coordinates are therefore: (-2,-6)
The equation of the axis of symmetry of the parabola is a vertical line passing through the vertex. Since all vertical lines have the shape x = constant in our case, in order to pass through (-2,-6) the vertical line is defined by the equation: x = -2.
See image attached to find the vertex drawn as a red point, and the axis of symmetry as an orange vertical line passing through it.