There two forms to write an equation in; slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept; and point-slope form, which is given by [tex]y-y_1=m(x-x_1)[/tex], where m is the slope and (x₁, y₁) is a point on the line. Given the information and instructions you have I assume you need point-slope form. For #1, you have m = 2 and point (3, 5). Substitute these values in:
[tex]y-5=2(x-3)[/tex]
If you need slope-intercept form, you start by using the distributive property on what you just wrote:
[tex]y-5=2*x-2*3
\\y-5=2x-6[/tex]
Now cancel the 5 to isolate y:
[tex]y-5+5=2x-6+5
\\y=2x-1[/tex]
