What is the equation of a line, written in slope-intercept form, given the points (4, 3) and (-4, -3) and the y-intercept, b = 0? and

What is the equation of a line, written in slope-intercept form, given the points (-2, 4) and (2, -2) and the y-intercept, b = 1?

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The points given on a line are (0, 5) and (3, -4). The line has a y-intercept, b = 3. What is the equation of this line written in slope-intercept form?
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