Can someone me with my math homework

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?